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https://issues.apache.org/jira/browse/STORM-329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14166245#comment-14166245
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ASF GitHub Bot commented on STORM-329:
--------------------------------------
Github user nathanmarz commented on a diff in the pull request:
https://github.com/apache/storm/pull/268#discussion_r18687511
--- Diff: storm-core/src/clj/backtype/storm/messaging/local.clj ---
@@ -45,10 +46,10 @@
(let [send-queue (add-queue! queues-map lock storm-id port)]
(.put send-queue (TaskMessage. taskId payload))
))
- (^void send [this ^Iterator iter]
+ (^void send [this ^ArrayList msgs]
(let [send-queue (add-queue! queues-map lock storm-id port)]
- (while (.hasNext iter)
- (.put send-queue (.next iter)))
+ (fast-list-iter [task msgs]
+ (.put send-queue (TaskMessage. (.task task) (.message task))))
--- End diff --
This needs type hints to avoid reflection.
> Add Option to Config Message handling strategy when connection timeout
> ----------------------------------------------------------------------
>
> Key: STORM-329
> URL: https://issues.apache.org/jira/browse/STORM-329
> Project: Apache Storm
> Issue Type: Improvement
> Affects Versions: 0.9.2-incubating
> Reporter: Sean Zhong
> Priority: Minor
> Labels: Netty
> Fix For: 0.9.2-incubating
>
>
> This is to address a [concern brought
> up|https://github.com/apache/incubator-storm/pull/103#issuecomment-43632986]
> during the work at STORM-297:
> {quote}
> [~revans2] wrote: Your logic makes since to me on why these calls are
> blocking. My biggest concern around the blocking is in the case of a worker
> crashing. If a single worker crashes this can block the entire topology from
> executing until that worker comes back up. In some cases I can see that being
> something that you would want. In other cases I can see speed being the
> primary concern and some users would like to get partial data fast, rather
> then accurate data later.
> Could we make it configurable on a follow up JIRA where we can have a max
> limit to the buffering that is allowed, before we block, or throw data away
> (which is what zeromq does)?
> {quote}
> If some worker crash suddenly, how to handle the message which was supposed
> to be delivered to the worker?
> 1. Should we buffer all message infinitely?
> 2. Should we block the message sending until the connection is resumed?
> 3. Should we config a buffer limit, try to buffer the message first, if the
> limit is met, then block?
> 4. Should we neither block, nor buffer too much, but choose to drop the
> messages, and use the built-in storm failover mechanism?
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